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            <div><h3 class="title">
                <a name="asio.reference.is_nothrow_require"></a><a class="link" href="is_nothrow_require.html"
                                                                   title="is_nothrow_require">is_nothrow_require</a>
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    <p>
        <a class="indexterm" name="asio.indexterm.is_nothrow_require"></a>
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    <p>
        A type trait that determines whether a <code class="computeroutput"><span
            class="identifier">require</span></code>
        expression will not throw.
    </p>
    <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
    <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span>
    <span class="keyword">typename</span><span class="special">...</span> <span
                class="identifier">Properties</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">is_nothrow_require</span>
</pre>
    <p>
        Class template <code class="computeroutput"><span class="identifier">is_nothrow_require</span></code>
        is a trait that is derived from <code class="computeroutput"><span class="identifier">true_type</span></code>
        if the expression <code class="computeroutput"><span class="identifier">asio</span><span
            class="special">::</span><span class="identifier">require</span><span class="special">(</span><span
            class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span
            class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;(),</span>
        <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span
                class="special">&lt;</span><span class="identifier">Properties</span><span
                class="special">&gt;()...)</span></code>
        is <code class="computeroutput"><span class="keyword">noexcept</span></code>; otherwise <code
            class="computeroutput"><span class="identifier">false_type</span></code>.
    </p>
    <h5>
        <a name="asio.reference.is_nothrow_require.h0"></a>
        <span><a name="asio.reference.is_nothrow_require.requirements"></a></span><a class="link"
                                                                                     href="is_nothrow_require.html#asio.reference.is_nothrow_require.requirements">Requirements</a>
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    <p>
        <span class="emphasis"><em>Header: </em></span><code class="literal">asio/require.hpp</code>
    </p>
    <p>
        <span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
    </p>
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            <div class="copyright-footer">Copyright © 2003-2022 Christopher M. Kohlhoff<p>
                Distributed under the Boost Software License, Version 1.0. (See accompanying
                file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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